1.Multi-gang Smart Dimmer Switch with 1/2/3 Gang Optional:Newly designed as 1/2/3 Gang dimmer functional to adjust the brightness of your light with one button for extremely simple operation,easily long pressing the button for dimmable lighting;A really good substitute and upgrade dimmer switch for its more compatibility with more types of light bulbs. 2.Compatible with Tuya Smart/Smart Life APP with No Hub Required:Fast APP configuration is featured with no hub required to control your lights smartly on smart phones,easily adjust the brightness for each lights individually or with the main control button;Each works without any interference for maximum convenience,greatly solves the bulb flicker problem caused by its incompatibility. 3.Work with Alexa and Google Home:Hands-free voice control with 0%-100% dimmable for each single button; can also be controlled via Smart Life/Tuya APP anytime, anywhere with no restriction;Power-on status and light mode setting are both available in Smart Life APP for real-sense intelligence. 4.Countdown&Schedule:Take full control of connected lamps with schedules and countdown (1/5/30 mins, 1 hour, etc.) with the APP; share control with family and friends for added convenience. 5.Neutral wire is required in your switch boxes to operate correctly;only supports 2.4 GHz network; Model: WS-EU-D;WS-US-D Working Voltage: 90-250V AC 50/60Hz Max. Load: 600W(INC)/220V;300W(INC)/110V; 150W(LED/CFL)/220V;75W(LED/CFL)/110V Protocol: Wi-Fi 2.4GHz Working Frequency: 2.4G Wireless Distance(outdoor): 20-30M Colour:black Material:Metal + Plastic Package Contents: 1 x ZigBee Multi-gang Smart Light Dimmer Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.